3-9
3
I/O INTERFACE
3-4 I/O Circuits
3-3-2 General-purpose output (DO0 to DO12)
These general-purpose outputs are available to users for freely controlling on/off operation in a pro-
gram.
These outputs are used in combination with the controller's internal 24V power supply and an exter-
nal 24V power supply, to drive loads such as solenoid valves and LED lamps. These outputs, of
course, can be directly connected to a PLC input circuit.
All general-purpose outputs are reset (turned off) when the DRCX controller is turned on or the
program is reset.
* When PRM2 ("Operation at return-to-origin complete" parameter) is set to 1 or 3, DO5 does
not turn off even if the program is reset. Similarly, when PRM21 ("Servo status output" param-
eter) is set to 1, DO7 does not turn off even if the program is reset.
3-4 I/O Circuits
This section provides the DRCX controller I/O circuit specifications and examples of how the I/O
circuits should be connected. Refer to these specifications and diagrams when connecting to external
equipment such as a PLC.
3-4-1 I/O circuit specifications
■ Input Circuit
Excluding emergency stop input circuit
Insulation method: Photocoupler insulation
Input terminal: Relay contact or NPN open collector transistor connected between
input terminal and 0V terminal.
Input response: 30ms max.
Input current: 5mA/DC24V
Input sensitivity: Current on: 3mA min.
Current off: 1mA max.
Emergency stop input circuit
Input terminal: Relay contact connected between emergency stop inputs 1 and 2
(between EMG1 and EMG2).
Input response: 5ms max.
Input current: 33.3mA/DC24V
■ Output Circuit
Insulation method: Photocoupler insulation between internal circuit and output tran-
sistor
Output terminal: NPN open collector output of all collective output common termi-
nals (0V side)
Output response: 1ms max.
Max. output current: 0.5A/DC24V per output
Residual ON voltage: 1.5V max.
■ Internal Power Supply
Output voltage: 24V±10%
Maximum supply current:
Two axes are horizontal type robots 900mA/DC24V
One axis is horizontal type robot 600mA/DC24V
Two axes are vertical type robots 300mA/DC24V
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